Tomato - garlic Thokku

This is lovely side dish that I came across on the net for idli and dosa. It is simple to make and tastes great.

Ingredients:

Red chillies
Fenugreek seeds - few
Cumin seeds
Mustard seeds- few
Oil
Tomato puree - (Use 3 or 4 tomatoes for a serving of 2 people)
Tamarind - small piece
Onion - Finely chopped (1/2 if its small, 1/4 if its big)(Optional)
Garlic pods ( 5 or 6) - finely chopped
Garam masala powder - a pinch
Asafoetida - a pinch
Red chilly powder - 1 tspn (Optional)
Salt to taste
Curry leaves - chopped (Optional)